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Examine the water quality aspects of urban runoff, and a comparison of results across various urban sites; Assess the impact of urban runoff on overall water quality; Implement stormwater management best practices. [1]: iii A major component of the project was an analysis of water samples collected during 2,300 storms in 28 major metropolitan ...
In a report released Thursday, researchers with the Pacific Institute determined that every year, 59.5 million acre-feet of stormwater go uncaptured across the United States — or roughly 53 ...
California groundwater basins, subbasins, and hydrologic regions. The California Department of Water Resources recognizes 10 hydrologic regions and three additional drainage areas within the U.S. state of California. The hydrologic regions are further subdivided into 515 groundwater basins. [1]
Northern California saw its wettest winter in almost a century, breaking the record set in 1982–83. [6] The same storm systems also flooded parts of western Nevada and southern Oregon. The damage was estimated at $1.55 billion ($1,926,663,046 today [4]), [3] including damage to California roads and highways estimated at more than $1.05 ...
September 25, 1939 – A tropical storm known as El Cordonazo, or The Lash of St. Francis, made landfall near Long Beach with sustained winds of 50 mph (85 km/h), which as of 2025 is the most recent tropical storm landfall in California. The storm killed 45 people across southern California, and another 48 people at sea, with residents caught ...
From February 4 to 7, the city captured 8.6 billion gallons of water, equivalent to the yearly needs of 106,000 homes. [28] Most of Southern California was 150%-300% of average from October 1 to February 7. Most places throughout Northern California were still 50%-110% of average after the storms. [20]
Stormwater, also written storm water, is water that originates from precipitation , including heavy rain and meltwater from hail and snow. Stormwater can soak into the soil ( infiltrate ) and become groundwater , be stored on depressed land surface in ponds and puddles , evaporate back into the atmosphere, or contribute to surface runoff .
Southern California, United States: Cause: Soil saturation from heavy rainfall, and deforestation due to recent wildfires: Deaths: 23 [1] Non-fatal injuries: 163: Property damage >$207 million (2018 USD) [2] [3] 65 residences destroyed, 462 residences damaged, 8 commercial buildings destroyed, 20 commercial buildings damaged